How to download PDF from website and store in %appdata% with Visual Basic .NET

问题

I have a PDF file hosted on a website. I would like my VB.NET program to retrieve the file/download it and store it somewhere in %appdata%. This could be in a folder of it's own like %appdata%/my_program if you want. How do I achieve this in my VB.NET program? Thanks.

回答1:

You can use WebClient.DownloadFile(Url,LocalPath) for downloading your PDF file and saving in a local path on your PC. The class is in System.Net Assembly.

回答2:

Use this to download file:

    Dim WC As New System.Net.WebClient
    WC.DownloadFile(URL, FileName)

or

    My.Computer.Network.DownloadFile(URL, FileName)

To save it in the %appdata% just use :

    My.Computer.FileSystem.SpecialDirectories.AllUsersApplicationData

or

    My.Computer.FileSystem.SpecialDirectories.CurrentUserApplicationData

来源：https://stackoverflow.com/questions/13539787/how-to-download-pdf-from-website-and-store-in-appdata-with-visual-basic-net